Cooling of an electric machine
US9154018B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 8, 2013 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Apr 8, 2033 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF28D15/0275
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electric machine including a closed chamber with a wall and enclosing a stator, a rotor and a first fluid and a heat exchanging unit stretching from the chamber through the wall to a fluid transporting passage. The heat exchanging unit includes conduits provided in a loop, containing a working fluid and equipped with evaporator channels and condenser channels, first heat transfer elements inside the chamber for transferring heat from the first fluid to the working fluid via the evaporator channels and second heat transfer elements in the passage for transferring heat out of the working fluid via the condenser channels to a second fluid, a first fluid propagating unit inside the chamber forcing the first fluid to circulate and a second fluid propagating unit in the passage forcing the second fluid to flow past the second heat transfer element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.